21984425

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{1493}}^1$

素因数の和:1553

約数の個数: 24

約数和(自身を含む): 29640960

約数和(自身を除く): 7656535

約数列:

[1, 5, 19, 25, 31, 95, 155, 475, 589, 775, 1493, 2945, 7465, 14725, 28367, 37325, 46283, 141835, 231415, 709175, 879377, 1157075, 4396885, 21984425]

約数ペア:

[(1, 21984425), (5, 4396885), (19, 1157075), (25, 879377), (31, 709175), (95, 231415), (155, 141835), (475, 46283), (589, 37325), (775, 28367), (1493, 14725), (2945, 7465)]